Ok ok I will make a comment lol - but I cannot do so from the view point of Islam as I was brought up a Roman Catholic christian. The Catholic church teaches virtually exactly the same idea in terms of conversion. It is a matter of free human will and choice. The church also teaches that the best form of "aposolate" as they call it - or conversion - is through deed or example, action no words or they might say being Christ's witness in the world. Certainly forced conversion is no conversion.

This being said I would have thought that Islam would teach that it is a muslim's duty to spread the faith - certainly committed Catholics are expected to share their faith with those they meet. But like Islam Christianity teaches the best form of sharing is through being a personal witness.

I actually find many many philosophical similarities between the faiths. It is indeed interesting.